Level 2 Plumbing Central Heating

A heating system which relies completley on natural convection to work would be better known as......

• Semi gravity

• Fully pumped

• Full gravity

• C plan

This type of system is known as a.........

• Fully pumped system

• Semi gravity system.

• Diverter valve system.

• Zone valve system.

Building Regulations Approved Document L1A refers to what?

• Energy efficiency for new build properties

• Enegry efficiency in older properties.

• Energy efficiency for central heating systems.

• Energy efficiency in hot water systems.

The purpose of increasing energy efficiency is to.......

• Save the consumer money.

• To protect the environment.

• To preserve our fossil fuels.

• All of the above.

How does the water circulate through the radiators in a one pipe system?

• Forced circulation using a pump.

• Natural convection.

• Semi gravity.

• Fully pumped.

This thermomechanical valve would be used to control......

• The flow of water to the cylinder.

• The temperature of the hot water.

• Anti gravity valve on the central heating.

• The temperature of the central heating.

An injector tee would be found where?

• Close to the boiler on the primary flow to the cylinder to get better flow rates through the coil.

• On the central heating flow to ensure adequate flow of water to each radiator.

• Close to the boiler on the central heating return to allow the cylinder gravity return to mix with it.

• On the cold feed to the central heating system to ensure the system fills correctly.

The purpose of an anti gravity valve is to.........

• Prevent the upstairs radiators from cooling down too quickly.

• Allow the upstairs radiators to heat up evenly.

• Prevent the upstairs radiators from heating up in the summer time due to natural convection.

• To prevent the upstairs radiators from getting too hot to touch.

The 'bar' is used to measure what?

• Atmospheric pressure

• Water pressure

• System pressure

• Head of pressure

This valve is a .......

• Temperature relief valve

• Pressure relief valve

• Thermo valve

• Automatic air release valve